CDC Stacks | Using The Point Load Test To Determine The Uniaxial Compressive Strength Of Coal Measure Rock - 9302 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Using The Point Load Test To Determine The Uniaxial Compressive Strength Of Coal Measure Rock
  • Published Date:
    0/1/1900
Filetype[PDF - 271.15 KB]


Details:
  • Keywords:
  • Description:
    Point load testing is used to determine rock strength indexes in geotechnical practice. The point load test apparatus and procedure enables economical testing of core or lump rock samples in either a field or laboratory setting. In order to estimate uniaxial compressive strength, index-to-strength conversion factors are used. These factors have been proposed by various researchers and are dependent upon rock type. This study involved the extensive load frame and point load testing of coal measure rocks in six states. More than 10,000individual test results, from 908 distinct rock units, were used in the study. Rock lithologies were classified into general categories and conversion factors were determined for each category. This allows for intact rock strength data to be made available through point load testing for numerical geotechnical analysis and empirical rock mass classification systems such as the Coal Mine Roof Rating (CMRR).

  • Supporting Files:
    No Additional Files